Space exploration began with the launch of Sputnik and Astrophysics was born as the application of physics to the phenomena observed by Astronomy, which etymologically means laws of the stars.
There are 2759 entries in this glossary.| Term | Definition |
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| Denebola Beta Leonis; β Leo |
An A star of magnitude 2.1, the third-brightest in the constellation Leo. The name, of Arabic origin, means the lion’s tail.
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